Refrigerating and carbonating apparatus.



APPLIOATION FILED MAR. 30, 1910.

Patented Dec. 10, 1912.

2 SHEETSSHBET 1.

H. MfiLLER. REFRIGBRATING AND OARBONATING APPARATUS.

APPLICATION FILED MAR. 30, 1910'.

Patented Dec. 10, 1912.

2 SHEETSSHEET 2.

HERMANN MI'TLLER, or LEIPZIG, GERMANY.

REFRIGERATING AND CARBONATING- APPARATUS.

Specification of Letters Patent.

Patented Dec. 10, 1912.

Application filed March 30, 1910. Serial No. 552,470.

To all whom it may concern:

Be it known that I, HERMANN M"6LLER, subject of Saxony, residing at No.1 Thomasiusstrasse, Leipzig, Kingdom of Saxony, German Empire, haveinvented new and useful Improvements in Refrigerating and CarbonatingApparatus, of which the following is a specification.

My invention relates to an improved refrigerating and carbonatingapparatus, adapted to prepare -icecream and aerated drinks.

An object of my invention is. to provide an apparatus of greatsimplicity and efliciency. n

' To make my invention perfectly understood, I have illustrated the samein the accompanying drawings in-which:

Figure 1 is a sectional elevation of the apparatus, and Fig. 2 is a planof the same.

In my apparatus three receivers are employed, placed inside each other.The

largest or outside receiver 1, is jacketed and the space between thisreceiver and its jacket is filled with a suitable insulating material,z. 6., a bad conductor of heat, as at 2. The intermediate receiver 3 hasa valve 4, arranged in its side, for admitting the gas to said outsidereceiver 3. The innermost receiver 5, is provided with a cover 6,closing tightly, .while the annular spaces between the receivers 5.and3, and 3 andl are closed at the top of said receivers by overlappingflanges of the receivers, as clearly illustrated in Fig; 1. From thecover 6 of the innermost receivers 5, a pipe 7 descends to, or about to,the bottom of said receiver 5, the said pipe being adapted to beconnected to a flask 8 containing carbonic acid, or another suitablegas, under pressure, as shown in Fig. 2. The connection is made by asuitable pipe 9, containing a valve 101 Within said pipe 7 another tube18, of smaller diameter is arranged, said pipe 18 being adapted to beconnected to a pipe 12, by means ,of a valve 11. The bottle 13 or anyother suitable receptacle intended to receive the aerated drink, isplaced below the discharge opening of said pipe 12. The receivers 5 and?communicate with each other through an aperture 14, which may beprovided with a suitable valve 14. The outermost receiver lconnects witha pipe 15, containing a valve 16. The three receivers 1, 3 and 5 arecarried by a frame 17.

In employing the apparatus, I proceed as follows: The mass to be cooledand carbonated is placed in the receiver 5, upon which the cover 6 istightened up, and the valve 10 opened. Carbonic acid in liquid form isthen fed from the reservoir 8 through pipe 9 into the receiver 5, wherethe said acid becomes vaporized and by its vaporization lowers thetemperature of the mass. The carbonic acid gas then escapes through thevalve guarded aperture 14, into the receiver 3, surrounding the receiver5, thereby cooling the latter around about. By withdrawing heat from thereceiver 5, the carbonic acid within the receiver 3, will increase itstemperature and its pressure will be raised accordingly; the raisedpressure of the gas will cause the valve 4 to open toward the receiver1, into which the gas escapes; on opening the valve 16, the gas willissue through the pipe 15.

I claim as my invention:

1. In a refrigerating and carbonating apparatus, a freezing chamber, aclosure fitting tightly thereon, a jacketed receiver containinginsulating matter between its walls, an

' inside receiver located within said jacketed receiver with a freespace between them, a gas-pipe for leading gas under pressure into saidinside receiver, a discharge-pipe leading out from said inside receiverand means for introducing gas under pressure into the space between thetwo receivers, substantially as and for the purpose set forth.

2. In a refrigerating and carbonating apparatus, the combination, withan outside jacketed receiver containing insulatin material between itswalls, of an insi e receiver adapted to serve as a freezing and aeratingchamber, a pipe leading into and a pipe leading out of said insidereceiver, an intermediate receiver located between the said inside andoutside receivers with free spaces between it and each of said first.mentioned receivers, and valves adapted to terial, of an insidereceiver, with a space between the same and the said outside receiver,means for feeding gas under pressure into said space between the. tworeceivers, a pipe for feeding gas under pressure down to the lower partof the inside receiver, and an outlet pipe within said gas feed pipe andleaving a space between the tWo pipes, substantially as and for thepurpose set forth.

4. In an apparatus of the character described, a jacketed receivercontaining insulating material, an inside receiver within said jacketedreceiver and spaced therefrom, a freezing chamber, within said insidereceiver and spaced therefrom, a tightly fitting closure on saidfreezing chamber, pipes conveying gas into said freezing chamber, one ofsaid pipes7 extending to near the bottom of said freezing chamber, anexit pipe 18 within, and spaced from said pipe 7, exit valve guardedpassages between said freezing chamber and said inside receiver I andbetween said inside receiver and said jacketed receiver, there .being avent in said 20 HERMANN MI'JLLER.

Witnesses I HENR. WERNER, RUDOLPH FRICKE.

